Lines and shad­ing

My rough lines start here. I have an Imag­ine FX cover tem­plate layer on top of the others, so I can eas­ily check the com­po­si­tion. And for cases like this one, I use guides to get all the shapes and vec­tors ex­actly right. The face is the cen­tre of fo­cus, so the hand and body help guide the viewer to­wards this. One of the most fun parts of this il­lus­tra­tion is do­ing the shad­ows. I re­ally want to use ac­cent light­ing – and that’s where the idea comes to me: it’s a photo ses­sion. Per­haps the girl is some kind of celebrity? If so, do her clothes need to look fash­ion­able, or is she do­ing the shoot in her work out­fit?